Rising Nepal Secondary Boarding School

First Terminal Examination 2075

Class: 9 F.M. 25

Time: 1 hr. Subject: Computer Science P.M. 8

1. State whether the following statements are True or False. 5

  1. CPU processes the raw data and turns into information.
  2. The nerve center of the computer is called secondary memory.
  3. Random Access Memory is commonly referred to as non-volatile memory.
  4. Cache memory is a small, high speed memory system that stores copies of the data from the most frequently used main memory locations.
  5. EPROM is a user-modifiable read-only memory that can be erased by exposing it to an electrical discharge.
  6. Leibniz, a French mathematician, invented the first mechanical adding mechanical adding machine called Pascaline in 1642.
  7. Desktop computer is a small, portable personal computer designed for mobile use and small enough to sit on one's lap.
  8. Super computer is a small digital computer whose central processing unit consists of a microprocessor, a single semi-conductor integrated circuit chip.
  9. Computer errors caused due to incorrect input data or unreliable programs are often referred to as garbage-in garbage-out (GIGO).
  10. The first-generation computers began with the development of vacuum tubes.

2. Give appropriate technical term for each of the following statements:

2

  1. A computer that operates on data by measuring changes in continuous physical variables such as voltage, resistance and rotation.
  2. A computer capable of solving problem by processing information in discrete form.
  3. A unit of computer memory or data storage capacity equal to 1,024 kilobytes.
  4. A measure of machine cycle time; equals one-thousandth of a second.

3. Give the full form of: 4

EDSAC PDP CU SRAM

4. Answer the following questions: 14

  1. What is primary memory? What is the function of primary memory?
  2. What is control unit? What is the function of CPU?
  3. What functions are performed by the ALU?
  4. What are the special features of fifth-generation computers?
  5. What are the main weakness of a computer?
  6. What is a mainframe computer and what are its typical applications?
  7. List the capabilities of computers.

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